we do want to update you on the tragic school shooting in newtown, connecticut. michelle franzen stepping back in with more of what we know and still plenty we don't know. >> reporter: a lot we don't know, bill, but were starting to have some numbers and some details start to fit out in this last half hour. what we do know is that the governor of connecticut continues to meet with families who have been skywestered at the nearby family, many that rushed there in that initial hour after hearing about this shooting only to be told that they need to go over and wait over here and, of course, receiving the worst possible news. we're hearing as many as 18 children were killed today by that lone gunman who walked in, and we're also learning about the gunman, a 24-year-old who had evidently at this hour, what we know is that may have gone to that school targeting his mom who worked as a teacher there and entering the school and going to her classroom and opened fire. that's what we know the details right now as well as this community that is just beginning to mourn this